EP0066539A1 - Dispositif pour le traitement thermique de riblons - Google Patents

Dispositif pour le traitement thermique de riblons Download PDF

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Publication number
EP0066539A1
EP0066539A1 EP19820810213 EP82810213A EP0066539A1 EP 0066539 A1 EP0066539 A1 EP 0066539A1 EP 19820810213 EP19820810213 EP 19820810213 EP 82810213 A EP82810213 A EP 82810213A EP 0066539 A1 EP0066539 A1 EP 0066539A1
Authority
EP
European Patent Office
Prior art keywords
waste heat
scrap
opening
storage space
discharge
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP19820810213
Other languages
German (de)
English (en)
Other versions
EP0066539B1 (fr
Inventor
Bernard Bouillé
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Alcan Holdings Switzerland AG
Original Assignee
Alusuisse Holdings AG
Schweizerische Aluminium AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Alusuisse Holdings AG, Schweizerische Aluminium AG filed Critical Alusuisse Holdings AG
Priority to AT82810213T priority Critical patent/ATE17749T1/de
Publication of EP0066539A1 publication Critical patent/EP0066539A1/fr
Application granted granted Critical
Publication of EP0066539B1 publication Critical patent/EP0066539B1/fr
Expired legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D3/12—Travelling or movable supports or containers for the charge
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/56—Manufacture of steel by other methods
    • C21C5/562—Manufacture of steel by other methods starting from scrap
    • C21C5/565—Preheating of scrap
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B1/00—Preliminary treatment of ores or scrap
    • C22B1/005—Preliminary treatment of scrap
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D3/0025—Charging or loading melting furnaces with material in the solid state
    • F27D3/003—Charging laterally, e.g. with a charging box
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D3/04—Ram or pusher apparatus
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S266/00—Metallurgical apparatus
    • Y10S266/901—Scrap metal preheating or melting

Definitions

  • the invention relates to a device for the heat treatment of scrap with a charging device leading to a furnace chamber, with a flue gas discharge and loading opening and possibly designed as a carriage, in the storage chamber of which the scrap is subjected to a preheating process.
  • the inventor has set himself the goal of designing a device of the type mentioned at the outset in such a way that it is easy to handle on the one hand and can be managed with relatively little energy loss on the other.
  • the storage space of the charging device is detachably connected to the furnace space and / or flue gas exhaust and fed with waste heat from the furnace space, and on the other hand, that the storage space is provided with a discharge which can be changed in length and this can be inserted into the loading opening .
  • the waste heat from the melting furnace itself is now used for preheating, and the preheated scrap is suddenly fed from the storage space to the furnace space thanks to the length-variable discharge, which prevents the scrap from cooling down.
  • a storage space has proven to be particularly favorable which is surrounded by a housing with an upper inlet opening for scrap and a discharge opening laterally offset from it and connected to the discharge, at least one of the openings - preferably both openings - by means of closure members is to be sealed; a storage space which is sealed against the outside air is thus produced which, according to a further feature of the invention, is part of a flue gas or waste heat circuit, in which the scrap can therefore be temporarily stored for heating.
  • the preheating area for example the charging trolley
  • the preheating area is fed without any longer interruptions, and at the same time a sufficient dwell time for preheating is possible.
  • This is achieved in particular by a staggered arrangement of the inlet and discharge opening, thanks to the brought in
  • Scrap falls through the inlet opening onto the floor of the storage space and is there, according to the invention, brought to the discharge opening by a pusher or the like.
  • the scrap stream crosses the waste heat flow in a region in which, according to the invention, inlet openings for the waste heat flow are preferably provided on one side wall of the storage space and outlet openings are provided on the opposite side wall.
  • those inlet and outlet openings are each connected to a feed or blow-out line for the waste heat flow, at least one blower possibly being inserted in the feed line and / or blow-out line.
  • a mixing element is preferably assigned to the feed line and the blow-out line, the interior of which is divided into two rooms by at least one control element, each of these rooms being assigned to one of the lines; the position of the control element, which is designed, for example, as a swivel flap, determines the amount of fresh air supplied in one embodiment and the ratio of the mixing of the supplied flue gas and the derived waste heat in another embodiment.
  • the device according to the invention detects a battery of melting furnaces in a particularly preferred embodiment, to which a common charging carriage is assigned, it has proven to be advantageous to provide pipe couplings with closure elements between the mixing element and the furnace space or the flue gas outlet in the supply line and blow-out line for the waste heat flow.
  • pressure regulating elements for the waste heat flow may also be present in the respective pipe socket in order to be able to better adapt the device to the respective conditions.
  • the height of the slits should preferably increase in the loading direction in order to best preheat the scrap closest to the furnace chamber.
  • the actual discharge for the preheated scrap consists in the context of the invention of an optionally telescopically extendable feed chute, which is inserted into the furnace chamber after the furnace mouth has been opened and, according to the invention, allows the scrap to run out in the center thanks to associated pushing elements; according to a further feature of the invention, the feed channel consists of refractory material and, when extended, protrudes into the furnace chamber.
  • the charging opening 1 of a melting furnace 2 is preceded by a charging trolley 3 for feeding scrap S, the rollers 4 of which are guided through track recesses 5 in a stage surface 6.
  • a feed channel 9 which is horizontally movable on rollers 8 transversely to the running direction x and has a U-shaped cross section in which a pressure box 10 in the direction of arrow y by a pressure cylinder 11.
  • a storage space 12 in the bottom 13 of which runs along the wall 14 adjacent to the melting furnace 2, a discharge opening 15 which is closed in FIG. 2 by a horizontal slide 16; a piston rod 17 connects this to a hydraulic cylinder 18.
  • a pressure plate 20 inclined toward the floor 13 can be displaced within the storage space 12 in the loading direction y.
  • This pressure plate 20 traverses air slots 23 provided on its stroke path to the front wall 14 of the storage space 12 in its side walls 21, 22. These connect the storage space 12 to a flank box 24.
  • a cover 27 that spans upward toward it has an inlet slot 29 with a slide valve 26, the lifting cylinder 28 of which rests on a boom 30 of the charging trolley 3.
  • a chute 31 which - as shown in particular in FIG. 1 - can accommodate a loading basket 32 with scrap.
  • This loading basket 32 is loaded in a lower position and then raised to the chute 31, as illustrated by the contour 32 a in Fig. 1.6.
  • a blower 35 is attached to the cover 27, the blow-out side of which is connected to an air line 36 of a flank box 34 arranged on the second side wall 22 of the storage space 12 and the intake side of which is connected to a gas mixer 40 via a line 37.
  • An air tube 38 also connects the other flank box 24 to that gas mixer 40.
  • the gas mixer 40 is - as esp. 3, 4 show pipe couplings 41 through two pipes 42, 43 connected to a flue gas discharge 45 of the melting furnace 2 or to a pressure regulating member 46 on this flue gas discharge 45.
  • the first scrap batch resting on the floor 13 of the storage space 12 is still stored outside the flow path of the flue gases determined by the opposite air slots 23 until the inclined pressure plate 20 is guided in the loading direction y; the scrap S gets into the front part of the storage space 12 and thus into the flow path of the flue gases. Through this, the scrap S falls into the two-part charging channel 9 in FIGS. 5 to 10, the leading channel 39 of which is pushed out in the described method step up to the furnace slide 51. Incidentally, the brick lining of the heating furnace 1 is indicated at 52.
  • the bulk of the scrap S seals the front part of the storage space 12 - and thus the flow path of the flue gases - against the chute 31, so that the furnace slide 51 is raised without any problems and the leading channel 39 can be moved into the furnace chamber 50.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Metallurgy (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geochemistry & Mineralogy (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • General Engineering & Computer Science (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Furnace Details (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
  • Tunnel Furnaces (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Processing Of Solid Wastes (AREA)
EP19820810213 1981-05-25 1982-05-19 Dispositif pour le traitement thermique de riblons Expired EP0066539B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82810213T ATE17749T1 (de) 1981-05-25 1982-05-19 Vorrichtung zur waermebehandlung von schrott.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH340181 1981-05-25
CH3401/81 1981-05-25

Publications (2)

Publication Number Publication Date
EP0066539A1 true EP0066539A1 (fr) 1982-12-08
EP0066539B1 EP0066539B1 (fr) 1986-01-29

Family

ID=4255183

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19820810213 Expired EP0066539B1 (fr) 1981-05-25 1982-05-19 Dispositif pour le traitement thermique de riblons

Country Status (5)

Country Link
US (1) US4445849A (fr)
EP (1) EP0066539B1 (fr)
AT (1) ATE17749T1 (fr)
IS (1) IS1376B6 (fr)
NO (1) NO158076C (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2155160A (en) * 1984-02-21 1985-09-18 Gautschi Electro Fours Sa Charging apparatus for a melting furnace
EP0247923A1 (fr) * 1986-05-29 1987-12-02 Intersteel Technology, Inc. Procédé et dispositif de chargement continu d'un four d'aciérie
EP0646758A1 (fr) * 1993-04-15 1995-04-05 Ishikawajima-Harima Jukogyo Kabushiki Kaisha Appareil de prechauffage et d'alimentation en ferrailles
IT201600109049A1 (it) * 2016-10-28 2018-04-28 Antonino Mangogna Caricatore per forni, combinazione di un forno e di detto caricatore e metodo di caricamento di rottami metallici in un forno.

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3422922C1 (de) * 1984-06-20 1985-06-20 Korf-BSW Engineering GmbH, 7640 Kehl Anlage mit einem Waermofen fuer auf Laenge geschnittene Strangstuecke einer Stranggiessanlage
US4676742A (en) * 1985-02-25 1987-06-30 Indalloy Division Of Indal Limited Preheater for reverberatory melting furnaces
US5026240A (en) * 1985-02-25 1991-06-25 Indalloy, Division Of Indal Limited Charging device
US4655436A (en) * 1985-12-10 1987-04-07 Williams Thomas W Method and apparatus for recovering and reusing energy from a melting furnace
US5415220A (en) * 1993-03-22 1995-05-16 Reynolds Metals Company Direct chill casting of aluminum-lithium alloys under salt cover
US5567381A (en) * 1995-03-20 1996-10-22 Abar Ipsen Industries, Inc. Hybrid heat treating furnace
US8414825B2 (en) * 2009-08-28 2013-04-09 Novelis Inc. Movable sweat hearth for metal melting furnace
WO2011156572A2 (fr) 2010-06-10 2011-12-15 Gillespie + Powers, Inc. Blocs de montant réversibles et leur procédé d'utilisation
GB2493493A (en) * 2011-06-27 2013-02-13 Melting Solutions Ltd A reverbatory furnace with a dry hearth for preheating scrap metals and a barrier to prevent waste gases entering the main chamber
KR101862263B1 (ko) * 2016-12-16 2018-05-29 주식회사 포스코 원료 공급장치 및 공급방법
CN117190706B (zh) * 2023-09-20 2024-04-05 清苑县宏达金属有限公司 一种具有预热功能的熔化炉

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2624565A (en) * 1949-06-24 1953-01-06 Nat Steel Corp Scrap melting
DE871306C (de) * 1950-06-08 1953-03-23 Theodor Brinkmann Vorrichtung zum Beschicken von grossen Schmelzoefen, insbesondere Siemens-Martin-OEfen
DE935332C (de) * 1953-05-24 1955-11-17 Ver Deutsche Metallwerke Ag Vorrichtung zum Trocknen und Vorwaermen des Einsatzgutes fuer Schmelzoefen, vorzugsweise Drehtrommeloefen
US2818247A (en) * 1953-08-14 1957-12-31 Charles B Francis Steel making apparatus
US2962174A (en) * 1958-12-24 1960-11-29 Harold F Shekels Apparatus for charging open hearth furnaces
US3383099A (en) * 1965-10-24 1968-05-14 Bbc Brown Boveri & Cie Method and apparatus for rapid heating of solid materials
DE1273550B (de) * 1963-07-24 1968-07-25 Rheinische Stahlwerke Im Abgasstrom eines kammerlosen Stahl-Schmelzofens angeordneter Behaelter zur Vorwaermung der Ofenbeschickung
US3537694A (en) * 1966-07-14 1970-11-03 Voest Ag Plant comprising a stationary,refractory-lined reaction vessel
DE2302012B1 (de) * 1973-01-16 1974-03-28 Maerz Ofenbau GmbH, 4000 Düsseldorf Verfahren und vorrichtung zum vorwaermen von schrott
DE7427889U (de) * 1974-12-05 Junker O Gmbh Vorrichtung zum Vorwärmen von Metallschrott

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE578627A (fr) * 1959-05-12
US3234010A (en) * 1962-12-31 1966-02-08 Harold A Mahony Apparatus and process for high speed scrap smelting
US3982889A (en) * 1975-07-14 1976-09-28 Olson Benjamin F Preheating system for aluminum remelt furnace
US4328388A (en) * 1980-02-11 1982-05-04 Longenecker Levi S Electro furnace feeding and furnace fume utilization and control
FR2498309B1 (fr) * 1981-01-20 1986-04-11 Clesid Sa Four electrique destine a la fusion de ferrailles et alimente en continu

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7427889U (de) * 1974-12-05 Junker O Gmbh Vorrichtung zum Vorwärmen von Metallschrott
US2624565A (en) * 1949-06-24 1953-01-06 Nat Steel Corp Scrap melting
DE871306C (de) * 1950-06-08 1953-03-23 Theodor Brinkmann Vorrichtung zum Beschicken von grossen Schmelzoefen, insbesondere Siemens-Martin-OEfen
DE935332C (de) * 1953-05-24 1955-11-17 Ver Deutsche Metallwerke Ag Vorrichtung zum Trocknen und Vorwaermen des Einsatzgutes fuer Schmelzoefen, vorzugsweise Drehtrommeloefen
US2818247A (en) * 1953-08-14 1957-12-31 Charles B Francis Steel making apparatus
US2962174A (en) * 1958-12-24 1960-11-29 Harold F Shekels Apparatus for charging open hearth furnaces
DE1273550B (de) * 1963-07-24 1968-07-25 Rheinische Stahlwerke Im Abgasstrom eines kammerlosen Stahl-Schmelzofens angeordneter Behaelter zur Vorwaermung der Ofenbeschickung
US3383099A (en) * 1965-10-24 1968-05-14 Bbc Brown Boveri & Cie Method and apparatus for rapid heating of solid materials
US3537694A (en) * 1966-07-14 1970-11-03 Voest Ag Plant comprising a stationary,refractory-lined reaction vessel
DE2302012B1 (de) * 1973-01-16 1974-03-28 Maerz Ofenbau GmbH, 4000 Düsseldorf Verfahren und vorrichtung zum vorwaermen von schrott

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2155160A (en) * 1984-02-21 1985-09-18 Gautschi Electro Fours Sa Charging apparatus for a melting furnace
EP0247923A1 (fr) * 1986-05-29 1987-12-02 Intersteel Technology, Inc. Procédé et dispositif de chargement continu d'un four d'aciérie
EP0646758A1 (fr) * 1993-04-15 1995-04-05 Ishikawajima-Harima Jukogyo Kabushiki Kaisha Appareil de prechauffage et d'alimentation en ferrailles
EP0646758A4 (fr) * 1993-04-15 1995-10-11 Ishikawajima Harima Heavy Ind Appareil de prechauffage et d'alimentation en ferrailles.
US5513206A (en) * 1993-04-15 1996-04-30 Ishikawajima-Harima Jukogyo Kabushiki Kaisha Apparatus for preheating and charging scrap materials
IT201600109049A1 (it) * 2016-10-28 2018-04-28 Antonino Mangogna Caricatore per forni, combinazione di un forno e di detto caricatore e metodo di caricamento di rottami metallici in un forno.

Also Published As

Publication number Publication date
IS2726A7 (is) 1982-11-26
US4445849A (en) 1984-05-01
NO158076B (no) 1988-03-28
ATE17749T1 (de) 1986-02-15
IS1376B6 (is) 1989-08-28
NO821709L (no) 1982-11-26
NO158076C (no) 1988-07-06
EP0066539B1 (fr) 1986-01-29

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